That’s why you gotta post using different posting styles, punctuation, slang, hobbies, and post times on different web sites with different accounts for the past 28 years (I am mentally ill)

The tech to link pseudoanonymous profiles exists. They are not linking your one off account to your real data on their own. They are linking alt accounts to people's main account that is often using their real name.

Unless they are able to be fed shit like all the school work I did growing up or all my personal notes that were physically written down, they won't have enough information on my real identity to link my online one.